Question

a) 2x = 16
b) 3²× = 81
c) 5²×-¹ = 125.​

Answer 1

Răspuns:

2ˣ=16

2ˣ=2⁴=>x=4

3²ˣ=81

3²ˣ=3⁴

2x=4=>x=4:2=>x=2

5²ˣ⁻¹=125

5²ˣ⁻¹=5³

2x-1=3=>2x=3+1=>x=4:2=>x=2